I don’t think the mine thing is a negative. To me, it seems a massive positive with very little downside.
I often don’t need mines early game, and you could get plenty of early production anyway from quarries (if necessary) and jungles (although they’ll be hard to find with a desert start, as will decent lumber mills).
Getting four gold though, that’s heaven. Hammers aren’t that useful after the early game. Gold is. Being able to get your citizen producing gold instead of hammers will be very handy.
And Mali will have lots of Builders. Once you get serfdom, there’s no direct production discount for Builders. There will be for Mali though with their 20%. And you’ll be building all those Builders in the city with Liang. (Or faith buying them. But yea, again, everyone can do that. Not like faith is hard to get.)
I still think Mali are a bit boring. I just don’t think you need to be Mali to get so much gold or faith. Have a look at the Egypt Civ of the Week.
I also don’t think their maluses are all that impactful beyond the very early game. If they could build, say, IZs or encampments then that would be interesting - particularly with the new power and resource rules.
I’m not even sure they really need to settle many desert cities anyway, contrary to the first look video. I mean, wouldn’t you be better settling just one which you run all your trade routes out of, and then settle the rest in, well, normal locations? Grassland and Plains hills will be better for mines, even if you only want them for gold. Your Commercial Hubs and HS also don’t need any deserts.